scaling - w3toppers.com

Image scaling by CSS: is there a webkit alternative for -moz-crisp-edges?

WebKit now supports the CSS directive: image-rendering:-webkit-optimize-contrast; You can see it working in action using Chrome and the last image on this page: http://phrogz.net/tmp/canvas_image_zoom.html The rules used on that page are: .pixelated { image-rendering:optimizeSpeed; /* Legal fallback */ image-rendering:-moz-crisp-edges; /* Firefox */ image-rendering:-o-crisp-edges; /* Opera */ image-rendering:-webkit-optimize-contrast; /* Safari */ image-rendering:optimize-contrast; /* CSS3 Proposed */ … Read more

Get Canvas coordinates after scaling up/down or dragging in android

Done it finally by myself. Draw everything by applying this formula to (px,py) coordinates: float px = ev.getX() / mScaleFactor + rect.left; float py = ev.getY() / mScaleFactor + rect.top; rect = canvas.getClipBounds(); //Get them in on Draw function and apply above formula before drawing

How to “scale” a numpy array?

You should use the Kronecker product, numpy.kron: Computes the Kronecker product, a composite array made of blocks of the second array scaled by the first import numpy as np a = np.array([[1, 1], [0, 1]]) n = 2 np.kron(a, np.ones((n,n))) which gives what you want: array([[1, 1, 1, 1], [1, 1, 1, 1], [0, 0, … Read more

Service Oriented Architecture – AMQP or HTTP

At first, REST, RPC – architecture patterns, AMQP – wire-level and HTTP – application protocol which run on top of TCP/IP AMQP is a specific protocol when HTTP – general-purpose protocol, thus, HTTP has damn high overhead comparing to AMQP AMQP nature is asynchronous where HTTP nature is synchronous both REST and RPC use data … Read more

Android imageview not respecting maxWidth?

Ah, android:adjustViewBounds=”true” is required for maxWidth to work. Works now!

Chrome, Safari ignoring max-width in table

Max-width applies to block elements. <table> is neither block nor inline. Ambiguous enough? haha. You can use display:block; max-width:1000px and forget about width:100%. Chrome and Safari follow the rules! Edit May 2017: please note, this comment was made 7 years ago (in 2010!). I suspect browsers have changed a bunch over the years (I wouldn’t … Read more

Can anyone explain me StandardScaler?

Intro I assume that you have a matrix X where each row/line is a sample/observation and each column is a variable/feature (this is the expected input for any sklearn ML function by the way — X.shape should be [number_of_samples, number_of_features]). Core of method The main idea is to normalize/standardize i.e. μ = 0 and σ … Read more

Resizing images to fit the parent node

@Override public void start(Stage stage) throws Exception { BorderPane pane = new BorderPane(); ImageView img = new ImageView(“http://…”); img.fitWidthProperty().bind(stage.widthProperty()); pane.setCenter(img); Scene scene = new Scene(pane); stage.setScene(scene); stage.show(); }

Scaled Bitmap maintaining aspect ratio

This will respect maxWidth and maxHeight, which means the resulting bitmap will never have dimensions larger then those: private static Bitmap resize(Bitmap image, int maxWidth, int maxHeight) { if (maxHeight > 0 && maxWidth > 0) { int width = image.getWidth(); int height = image.getHeight(); float ratioBitmap = (float) width / (float) height; float ratioMax … Read more

What does the filter parameter to createScaledBitmap do?

To expand on Karan’s answer: As a general rule you won’t see any difference if you’re scaling your image down, but you will if you’re scaling it up. Passing filter = false will result in a blocky, pixellated image. Passing filter = true will give you smoother edges. However, as EIYeante pointed out in the … Read more